B.Com

Commerce is the activity of buying and selling of goods and services, especially on a large scale. The system includes legal, economic, political, social, cultural and technological systems that are in operation in any country or internationally. Thus, commerce is a system or an environment that affects the business prospects of economies. It can also be defined as a component of business which includes all activities, functions involved in transferring goods from producers to consumers.
B.Com (Hons) is a three-year undergraduate degree program to provide the student with a wide range of skills in the area of commerce, accounting and management. It also helps in preparing the students for business enterprises in Account and Finance roles. Some universities allow students to specialise in a particular subject in a final year. Some universities offer B.Com degree course.
Majority of syllabus of B.Com (P) and B.Com (Hons) is same. B.Com (P) gives an overview of various subject where same course in honors has more depth and content. In B.Com (P) you cannot specialise but in honors degree student can specialise. B.Com(Hons) is now a de-facto a standard accepted degree for jobs. Cut-off for B.Com (Hons) is higher in comparison to B Com (Pass).

1) No matter how much you think you know about a subject, there is always something more. The only way through is to practice each and every possible combination of questions. Never believe that you have learned everything. I learned this the hard way.
2) You need to be up to date with all the laws and acts. Small amendments may also cause big problems. For instance, companies act, 2013. It brought a huge change in a lot of areas including accounting, costing, CAR, CARR, etc. So make sure you know your way around each act. One tip a friend of mine gave is to find all the loopholes in all the Acts and laws. This will ensure your complete knowledge in the area.
3) find some good tuition if you haven't already. From my experience, the chapter is not at all sufficient. Try and find someone who has knowledge of the subject and get tutored. Although this is optional, you never know what new idea you may get.
4) Try and arrange group studies. It always helps. New ideas and different concepts can be learned easily.
5) Actual work experience helps a lot. You've mentioned that you've worked before. I'm sure that has helped. If possible, try to get a job in cost related areas, maybe an articleship in a cost accounting firm. It will help you immensely.
6) Many may not know this, but your prospectus has a page where it tells you what is expected in each type of question. You can go through this and maybe it'll help you frame your answers in a better way.